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보문 : 모발염색제 성분인 초산납에 대한 어성초 추출물의 항산화 및 미백효과
정재윤 ( Jai Yun Jung ),오영희 ( Young Hee Oh ),박신희 ( Shin Hee Park ),윤미영 ( Mi Young Yoon ),표애자 ( Ae Ja Pyo ),김선주 ( Sun Ju Kim ),유영월 ( Yeong Wol Yu ),정인주 ( In Ju Jung ) 대한미용학회(구 대한미용과학회) 2014 대한미용학회지 Vol.10 No.2
To evaluate the antioxidative and whitening effects of Houttuynia cordata Thunb (HCT) extract on lead acetate (LA), hair dye component, cell viability was measured by colorimetric assay after NIH3T3 fibroblasts were cultured in media containing various concentrations of LA. And also, the effect of antioxidant, vitamin E on LA-induced cytotoxicity was analysed. For the protective effect of HCT extract on LA-induced cytotoxicity, NIH3T3 fibroblasts were pretreated with 110 or 130 μg/mL of HCT extract for 2 h before the treatment of LA. And also, the antioxidative and melanogenic effects of HCT extract were assessed by superoxide dismutase (SOD)-like activity, total amount of melanin and tyrosinase activity. In this study, LA significantly decreased cell viability in dose-dependent manner. And the XTT50 value was calculated at 48.3 μM of LA. In the effect of antioxidant, vitamin E, it effectively prevented LA-induced cytotoxicity by the significant increase of cell viability. In the protective effect of HCT extract on LA-induced cytotoxicity, HCT extract significantly increased cell viability which was decreased by the cytotoxicity induced by LA, and also it showed the antioxidative effect by SOD-like activity. In the melanogenesis, HCT extract showed the decreased of amount of melanin and tyrosinase activity. From these results, it is suggested that the cytotoxicity of LA is involved in oxidative stress, and HCT extract effectively prevented the cytotoxicity and the melanogenesis induced by LA.
보문 : DNCB에 의해 발생되는 세포독성에 대한 오이풀 추출물의 방어 효과
박승택 ( Seung Taeck Park ),강민정 ( Min Jung Kwang ),제갈승주 ( Seung Joo Jekal ),이재형 ( Jae Hyoung Lee ),윤미영 ( Mi Young Yoon ),표애자 ( Ae Ja Pyo ),임요섭 ( Yo Sup Rim ),정인주 ( In Ju Jung ) 대한미용학회(구 대한미용과학회) 2013 대한미용학회지 Vol.9 No.2
The protective effect of Sanguisorba officinalis L. (SO) extract against 1-chloro-2, 4-dinitrobenzene (DNCB)-induced cytotoxicity was performed in cultured human skin fibroblasts (Detroit 551 cells). The DNCB remarkably lowered cellviability in a dose-dependent manner, and its XTT50 value was measured at 48.4 μM. Whereas, 20 and 30 μM pretreatment of catalase for 2 hours before 48.4 μM treatment of DNCB significantly raised the cell viability. And also, 70 and 90μg/mL pretreatment of SO extract for 2 hours before 48.4 μM treatment of DNCB significantly raised the cell viability. The SO extract had a considerable DPPH-radical scavenging activity and SOD-like activity. From these results, it is suggested that the cytotoxicity of DNCB may be correlated with oxidative stress, and also, SO extract effectively prevented DNCB-in duced cytotoxicity by antioxidative effect. Conclusively, the natural plant extract such as SO may be a putative resource for the prevention of the cytotoxicity induced by skin decoloric agent such as DNCB.